Here`s mine: back in the carb`d days, this would sit on top of the air horn and "kinda" redirect or stabilize air flow into the venturi for supposedly better atomization, okaaaayyyyy, ya sure

with FI engines and installing this into the tube, you have several restrictions in the path, air flow noise surpressors, on some applications, MAF sensors, then the TB`s...
I personally don`t see it doing jack in a dry intake set-up, or any other for that matter...PR...